UPDATE: Validating my CSS was a lot easier – a quick phone call to Matt to get help figuring out the errors, stripping out the oh-so-cute but not valid scrollbars, and now I am pleased to announce that the CSS is valid too!
I would like to dedicate this moment to Tantek for not laughing at me too hard when I said CSS makes my eyes bleed and instead convincing me that I could do it. I also want to dedicate it to Matt for his helpful hand-holding and coding along the way, and Kristine for her CSS zen help.
Wow. Valid XHTML, Valid CSS, and Valid RSS. I think I’ve hit a new level of Geek Nirvana.